Mapbox - clustering only markers on the same coordinates

Question

Is it possible to cluster only markers on the same coordinates? When using mapbox marker clustering all markers are grouped depending on map zoom level. What I would like to do is to have all markers independent (non grouped) except markers on the same latitude-longitude coordinates.

Is that possible?

That is not clustering (see wikipedia), but duplicate coordinate detection, a much simpler problem. — Has QUIT--Anony-Mousse
Have you even read my post?The task is to GROUP markers with the same coordinates and DON'T GROUP others. — Marinko Dragojević
[link]mapbox.com/mapbox.js/example/v1.0.0/filtering-marker-clusters — Marinko Dragojević
Yes. You want to group duplicates, and not do clustering, but your question title says "clustering" (see Wikipedia for clustering) — Has QUIT--Anony-Mousse
The obvious (and likely best) solution is to merge duplicate coordinates a single marker prior to adding them to the map. — Has QUIT--Anony-Mousse

Marinko Dragojević Marinko Dragojević · Accepted Answer · 2015-12-26T16:52:57

This is not a perfect solution but it will do the job... I've solved my problem by using two layer groups, one for individual markers and one for clustered markers.

Something like this:

var overlay1 = L.layerGroup().addTo(map);//this one is for single markers
var overlay2 = L.layerGroup().addTo(map);//this one is for clustered

var layers;


//load markers from external source
var featureLayer = L.mapbox.featureLayer()

.loadURL('/my_geojson_script/')

.on('ready', function(e) {

    layers = e.target;

    //go and do the filtering
    doTheThing();



})





function doTheThing()

    overlay1.clearLayers();//remove all single markers
    overlay2.clearLayers();//remove all clustered

    var clusterGroup = new L.MarkerClusterGroup().addTo(overlay2);



    layers.eachLayer(function(layer) {


        //the number of markers on this layer coordinates (info collected from json property. I calculate this in advance)
        var numberOfMarkers = layer.feature.properties.numberOfMarkers;


        //if number of markers is greater than 1 add layer to cluster group         
        if(numberOfMarkers>1){

            clusterGroup.addLayer(layer);
        }
        else{//if number of markers is 1 add layer to individual layer group

            overlay1.addLayer(layer);
        }




    }); 
}

Mapbox - clustering only markers on the same coordinates

1 Answers